TY  - BOOK
AU  - Hillier, Frederick, S. and Lieberman, Gerald, J 
TI  - Introduction to operations research concepts and cases 
SN  - 978-0-07-060092-8 
U1  - 003 HIL  
PY  - 2005///
CY  - Tata mcgraw hill company Ltd 
PB  - New Delhi 
KW  - OPERATION RESEARCH
ER  -